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Answer»

(i) Divisibility rule for 4 is last two digit of a number is divisible by 4.

∴ The number 24308 is divisible by 4.

Thus,

Least value of A for that 234A8 is divisible by 4.

(ii) The given number is 98A4.

For divisible by 4,

Last two digit of number must be divisible by 4.

And for divisible by 9,

Sum of digits of that number is divisible by 9.

i.e.,

A4 is divisible by 4.

Possibilities for A are 0,2,4,6,8

And 9+8+A+4 = 21 + A is divisible by 9.

Possibilities for A are 6.

Hence,

The number 98A4 is divisible by 4 and 9 is A = 6.



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